Results 261 to 270 of about 2,413,906 (309)

Kinetics of the amorphous-to-nanocrystalline transformation in Fe73.5Cu1Nb3Si13.5B9

Journal of Applied Physics, 1993
Isothermal measurements of the electrical resistance R were performed in samples of the alloy Fe73.5Cu1Nb3Si13.5B9 at temperatures where the nanocrystalline phase develops. At each temperature, nanocrystallization is associated to a very slow decrease of R(t) compared to conventional crystallization processes.
P. Allia, BARICCO, Marcello, P. Tiberto, F. Vinai   +3 more
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Kinetic Model for Phosphate Transport and Transformation in Calcareous Soils: I. Kinetics of Transformation

Soil Science Society of America Journal, 1981
Abstract Phosphorous in concentrations exceeding those generally observed through agricultural activities has been encountered at land application wastewater treatment sites. To predict the environmental impact of these systems, a model was developed to describe the reaction of orthophosphate with mineral soils ...
Carl G. Enfield, T. Phan, David M. Walters, Roscoe Ellis   +3 more
openaire   +1 more source

Kinetics of Quartz Transformation

Transactions of the Indian Ceramic Society, 1974
The transformations of two varieties of high purity quartz were studied at 1400 and 1500°, the determination of quartz being done by DTA. The transformations were found to be greatly influenced by particle size. The decomposition of fine fractions of quartz followed a spherical model in which the decomposition starting from the surface nucleation ...
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Kinetics of phase transformation on a Bethe lattice

The Journal of Chemical Physics, 2004
A kinetic Ising model is applied to the description of phase transformations on a Bethe lattice. A closed set of kinetic equations for a model with the coordination number q=3 is obtained using a procedure developed in a previous paper. For T close to Tc (T>Tc), where Tc is the phase transition temperature, and zero external field (absence of ...
Gersh O, Berim, Eli, Ruckenstein
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Supramolecular Polymer Transformation: A Kinetic Study

The Journal of Physical Chemistry B, 2014
Investigation of supramolecular kinetics is essential for elucidating self-assembly mechanisms. Recently, we reported on a noncovalent system involving a bolaamphiphilic perylene diimide dimer that is kinetically trapped in water but can rearrange into a different, more ordered assembly in water/THF mixtures ( Angew. Chem. Int. Ed.
Jonathan, Baram, Haim, Weissman, Boris, Rybtchinski   +2 more
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Acceleration transforms and statistical kinetic models

Journal of Statistical Physics, 1988
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
LuValle, M. J., Welsher, T. L., Svoboda, K.   +2 more
openaire   +2 more sources

Kinetics of the η–η′ transformation in Cu6Sn5

Scripta Materialia, 2011
CuSn is an important intermetallic compound used in lead-free soldering and anode materials for Li-ion batteries. Cu Sn exists in at least two crystal structures, with a transformation from hexagonal η-CuSn at temperatures higher than ∼186 °C to monoclinic η′-CuSn at lower temperatures. Using variable temperature synchrotron X-ray diffraction analysis,
Nogita, K., Gourlay, C. M., McDonald, S. D., Wu, Y. Q., Read, J., Gu, Q. F.   +5 more
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Kinetic Study of the Polymorphic Transformations of Phenylbutazone

Journal of Pharmaceutical Sciences, 1984
The polymorphic transformations of phenylbutazone from metastable forms alpha and beta to stable form delta were studied quantitatively at four temperature and five humidity levels by X-ray powder diffractometry. The transformation of form alpha conformed with the Avrami-Erofe'ev kinetic model and form beta conformed with apparent first-order kinetics.
Y, Matsuda, E, Tatsumi, E, Chiba, Y, Miwa   +3 more
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Sorption Kinetics and Transformation of DDT in Sediment

Water, Air, and Soil Pollution, 1999
The overall objective of this study was to investigate the sorption kinetics of DDT in sediment under similar experimental conditions employed in corresponding toxicity studies for bentic organisms. A batch of aerated Schoonrewoerdse Wiel sediment, initially spiked with DDT, was sampled over a period of seven days.
van den Hoop, MAGT, Kreule, P, Loch, JPG
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Bainitic transformation kinetics and stress assisted transformation

Materials Science and Technology, 2001
Abstract With reference to experimental data, the effects of stress, chemical composition, and transformation temperature on bainitic transformation kinetics are analysed. A decrease of transformation temperature or an increase of carbon equivalent results in a slow rate of bainitic transformation and reduces the promotive effect of stress induced ...
C.C. Liu, K.F. Yao, Z. Liu, X.J. Xu
openaire   +1 more source